Multiattack

The kembingur makes one bite attack and one tail attack.

Bite

Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 29 (6d6 + 8) piercing damage.

Tail

Melee Weapon Attack: +12 to hit, reach 20 ft., one target. Hit: 26 (4d8 + 8) bludgeoning damage.

Churn Water (Recharge 4-6)

The kembingur thrashes violently. Each creature within 20 feet of the kembingur must make a DC 17 Dexterity saving throw, taking 36 (8d8) bludgeoning damage on a failed save, or half as much damage on a successful one. The water within 60 feet of the kembingur becomes difficult terrain for 1 minute. Each creature that starts its turn on the deck of a ship in this area must succeed on a DC 17 Dexterity saving throw or fall overboard.